Rotor construction.



y B. MATTMAN.

ROTOR CONSTRUCTION.

APPLICATION FILED MAY 31, 1907. 922,794. Patented May 25, 1909.

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THE mmms PETERS EMIL MATTMAN, OF NORWOOD, OHIO, ASSIGNOR TO ALLIS-CHALMERS COMPANY, A CORPO- RATION OF NEW JERSEY, AND THE BULLOCK ELECTRIC MANUFACTURING COMPANY,

A CORPORATION OF OHIO.

ROTOR CONSTRUCTION.

Application filed I-Iay 31, 1907.

To all whom it may concern:

Be it known that 1, Brain MATTMAN, citizen of the Republic of Switzerland, residing at Norwood, in the county of Hamilton and.

State 01" Ohio, have invented certain new and useful Improvements in Rotor Constructions, of which the following is a full, clear, and exact spt cation.

My invention tes to the ventilation of -.hines.

In ventilating t ,namoelectrie machines the How oi air is often maintained by centrifugal force acting on the air in radial passageways in the l'Ohu member.

It is the object oi nr on to assistin this ventilation. This is accomplished by providing tan-blades just within the winding and core of the rotwing member, these fanblades being slightly skewed so that there is an axial flow of the air heneath the radial openings of the rotating mernbe The specific novel features of my inven tion will appear from the description and drawings, and will be particularly pointed out in the claims.

Figure 1 shows a partial and view of a retating member a dynamo-e .ctric machine embodying inf; invention. 1 2 is a section on the line 2 of Fig. 1; and Fig. 3 is a 30 partial development of the spider.

The winding of the rotating member of a dynamo-electric machine oi any desired type is located in slots in the annular core 1] This core is provided with radial openings 12 and may be mounted on dove-tail extensions 13 ofthe slightl shew ed ribs and tan-blades 14, arranged around the peripher of the rim 15 of the spider l6.

In the operation of the machine in either direction, the skewed fan-blades 14 cause a flow of air axially of the rotating member just Within the core 11. This maintains a continuously fresh and cool body of air heneath said core. The radial llow of this cool air through the openings 12 readily keeps the windings l0 and core 11 cool.

Many modifications may be made in the precise construction shown and described Specification of Letters Patent.

Patented May 25, 1909.

Serial No. 376,495.

without departing from the spirit and scope oi my invention. All such I aim to cover in the following claims.

What I claim as new is l. A rotating element of a dynamo-electric machine, comprising an annular laminated core provided with radial openings, a winding in slots in said core, a spider on which said core is mounted, and fan-blades around the periphery of said spider arranged to cause an axial flow of the air within said core.

2. A rotating element of a dynamo-electric machine, comprising a spider, a rim therefor, skewed an-blades around the periphery of said rim, an annular core attached to said tan-blades, and windings on said core.

A rotating element of a dynamo-dew tric machine, comprising a spider, a rim therefor, skewed tan-blades around the peripher of said rim, an annular core attached to said tan-blades, and windings on said core, said core being provided with radial openings.

4. A rotating element of a dynamo-electric machine, comprising a central circular supporting member arranged for mounting ona shaft, skewed tan-blades around the periphery or said supporting member, an annular core attached to said fan-blades, and windings on said core.

5. A. rotating element of a dynamo-electric machine, comprising a wheel provided with ribs around its periphery, said ribs be ing arrang d at an angle to the axis of the wheel, an annular core mounted on said ribs, and windings on said core.

6. A. rotating element of a dynamo-electric machine, comprising a wheel provided with skewed ribs around its periphery, an annular core dove-tailed to the outer ends of said ribs, and windings on said core.

In testimony whereof I aflix my signature, in the presence of two witnesses.

EMIL MATTMAN. \l itnesses GEO. B. SoHLnY, Flinn J :KINSEY. 

